CriRYSOMELID^. 



509 



ten or twelve days afterwards, while the last one stays under 

 gTound all winter, and only emerges in the beetle state in the 

 following spring, just 

 in time to lay its eggs 

 upon the young po- 

 tato leaves," which it 

 devours to such an ex- 

 tent as to sometimes 

 almost cut off the en. 

 tire crop in certain lo- 

 calities. The Editors 

 of the ' ' American En- 

 tomologist," from whom we have quoted, enumerate and 

 figure various beetles, hemiptera, and a species of Tachiua fly 

 (Lydella doryphoraa Riley) which mostly prey upon the larvae. 

 Dr. H. Shinier shows, in the " American Naturalist," vol. iii, 

 p. 91, that a dry and hot summer is very unfavorable to the 

 development of this insect, the pupie dying for want of suffi- 

 cient moisture in the soil. The best remedy against its attacks 

 is hand picking. 



A ver}^ closely allied species or variety, the D. juncta Ger- 

 mar (Fig. 506^), may be easily confounded with the other spe- 

 cies, but differs, according to Walsh, in the head 

 of the larva being paler, while in the beetle the third 

 and fourth stripe from the outside are ixnited, where 

 they are distinct in the D. 10-lineata, and the legs 

 are entirely pale yellow, with a dark spot on the 

 femora. It feeds on the wild potato, not eating ^"'S- •''OS^. 

 the cultivated species, and has always been an inhabitant of the 

 "Western and Southern States. 



Chrysomela is an oval oblong genus, and its all}', Calligrapha, 

 is ver}' convex, hemispherical ; the species are gaily spotted and 

 ■ banded ; Calligraplm sccUaris Lee. is abundant on the alder. 

 The larvae (Fig. 506*, larva of C. Philadelphica Linn.) are 

 thick and fleshy, with a row of black spiracles along the side 

 of the body, and a dark prothoracic shield. 



Eumolpus auratus Fabr. is a shining, rich golden green bee- 

 tle, found on the dog's-bane. 



Chlamys is a little oblong, cubical, roughly shagreened, 



